Ключевые слова: big, car, coal, construction, dig, dirt, dump, dump truck, earth, energy, environment, equipment, excavation, excavator, geology, heavy, huge, industrial, industry, iron, large, machine, machinery, metal, mine, mine equipment, mine machinery, mineral, mining, mining truck, mover, open, opencast, ore, pit, power, production, quarry, rock, sky, stone, transport, transportation, truck, trucks, vehicle, wheel, wheels, work, yellow,